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Cycloheptene, 1-ethynyl-, also known as 1-ethynylcycloheptene, is a chemical compound with the molecular formula C9H12. It is a cyclic alkene with a triple bond (acetylene) at the 1-position, making it a conjugated diene. Cycloheptene, 1-ethynyl- is an organic molecule that belongs to the class of cycloalkenes, which are cyclic hydrocarbons with a double bond. Cycloheptene, 1-ethynyl-, is characterized by its seven-membered carbon ring and a terminal acetylene group, which can participate in various chemical reactions, such as addition reactions, due to its unsaturated nature. It is an important intermediate in the synthesis of more complex organic compounds and can be used in the preparation of pharmaceuticals, agrochemicals, and other specialty chemicals.

2809-83-8

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2809-83-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 2809-83-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,8,0 and 9 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 2809-83:
(6*2)+(5*8)+(4*0)+(3*9)+(2*8)+(1*3)=98
98 % 10 = 8
So 2809-83-8 is a valid CAS Registry Number.

2809-83-8SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name 1-ethynyl-1-cycloheptene

1.2 Other means of identification

Product number -
Other names 1-ethynyl-cycloheptene

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:2809-83-8 SDS

2809-83-8Relevant academic research and scientific papers

Isomerization of propargylic alcohols into α,β-unsaturated carbonyl compounds catalyzed by the sixteen-electron allyl-ruthenium(II) complex [Ru(η3-2-C3H4Me)(CO)(dppf)] [SbF 6]

Cadierno, Victorio,Garcia-Garrido, Sergio E.,Gimeno, Jose

, p. 101 - 110 (2007/10/03)

The 16-e- (η3-allyl)-ruthenium(II) complex [Ru(η3-2-C3H4Me)(CO)(dppf)][SbF 6] is an efficient catalyst for the regioselective isomerization of terminal propargylic alcohols HC≡CCR1R2(OH) into α,β-unsaturated aldehydes R1R2C=CHCHO or ketones R3R4C=C(R1)COMe (if R2 = CHR3R4) under mild conditions. This complex has been also used as catalyst for the preparation of conjugated 1,3-enynes via dehydration of propargylic alcohols.

Vinyl Cations, 37. Rearrangement of Cyclic Homopropargyl Sulfonates to Condensed Cyclobutanones and Cyclopropyl Ketones

Hanack, Michael,Schuhmacher, Werner,Kunzmann, Erich

, p. 1467 - 1487 (2007/10/02)

Cyclic homopropargyl sulfonates 8 (tosylates, triflates, nonaflates, and damsylates) are prepared and solvolysed.The resulting rearrangement reactions are studied with respect to the properties of the solvents used, leaving groups, the substituent on the triple bond, and with respect to the ring size of the sulfonates 8.

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